Chicago’s municipal elections are right around the corner. And for anyone running for office, the magic number is “50% + 1”. If they get that, they win. If they don’t, they face an April runoff against their opponent with the next-highest vote total. Some of the aldermanic races are tight. Crain’s Chicago Business’ Greg Hinz hits us up with his predictions of which of the city’s 50 wards are likely go to a runoff. (Flickr/Hal Hex)